diff --git a/src/include/replication/syncrep.h b/src/include/replication/syncrep.h
index 74820cbbb4..5635621600 100644
--- a/src/include/replication/syncrep.h
+++ b/src/include/replication/syncrep.h
@@ -13,6 +13,7 @@
 #ifndef _SYNCREP_H
 #define _SYNCREP_H
 
+#include "access/xlogdefs.h"
 #include "utils/guc.h"
 
 #define SyncRepRequested() \